/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: quoccanxd https://cdn.slidesharecdn.com/profile-photo-quoccanxd-48x48.jpg?cb=1523477821 chẳng có chi để nói muốn biết thì tá»± tìm hiểu...